Pools - There are two main pool areas on this ship. I didn't spend much time in the main pool area, I found the music was often too loud and I found the pools were designed more for children then adults. I think there were 4 hot tubs, but I'm not positive. This area was adjacent to the buffet, so it had free drinks - tea, milk, water, iced tea.
I spent most of my time in Spice H2O, the adult pool area. While there was normally music playing, it was at a reasonable volume. The pool was small and at night it actually converted into a dance floor (the floor of the pool would go up and down, fancy technology I hear). There were 2 hot tubs on each corner of the area with great views out the back of the ship. There was also a small buffet in this area, but there were no drink offerings other then paid drinks at the bar.
I did spend some time on a top sun deck in the front of the ship, these areas do not have music, nor do they seem to have many kids.
The ship does have a topless deck and a "freestyle" deck. I did not visit either, but I did hear through the grapevine that people do go completely nude on the "freestyle" deck.
There is also an area called Posh. I may have the story wrong, but I thought this was either part of or included in the villa complex. However, you could also pay around $100 for access during the cruise. My understanding is that there was better chairs and better bar service. I know one person who used this and enjoy it.
Slides - There were 3 slides on this ship, the main yellow one, a purple one and a green one. I did not go in the purple or the green ones because they had cold water and it was already cold that day! I did go in the big main yellow one, which some people have called a toilet bowl like slide. This slide had warm water, yea! and you rode down it on a round float. You have to get your float at the bottom of the slide so don't climb the stairs until you have your float! Initially you go down a typical water slide shoot and then you end up in the "toilet bowl" and you go around 3 times before you get sucked down the final portion of the slide. This slide was a lot of fun, though the 3 times in the toilet bowl might have been a little too much. There were a lot of adults on line for the toilet bowl slide, it was that much fun! I'm sure if there were a lot of children on the cruise or warmer out the line would have been crazy, it was long enough as it was.
Rock Climbing - The EPIC has a rock climbing and rappelling wall between the main pool area and Spice H2O. I've only done rock climbing once, but it was only a few months before and I climbed all the basic and intermediate walls. I decided to stick with the easy section on the ship. The wall was shorter, but it wasn't EASY. For someone who has never rock climbed before, this would be a tough wall and I doubt they would make it to the top. But for beginner rock climber it would be a challenge. I never made it back to the rock climbing to try another wall though. But it was fun and a nice break for the day, especially if it's not a hot day. You do not need to bring your own shoes for this, but you need socks. You will also need to sign and electronic waiver before climbing.
Bowling - The ship had 2 sets of lanes for bowling. I only saw the one in O'Sheehans used once or twice. They had neon lights and offered shoe rental. On a more relaxing cruise this might have been a fun option.
Watch Sale - I'm not sure if a watch sale is actual entertainment, but this somehow felt a bit like it. They offer like 60% off watches and people act like they're giving them away. It was actually a bit frightening. I tried to look and thought about getting a watch, but the lines were so long and the people were acting like animals so I passed on the watch. I recommend watching people at the watch and buy a watch somewhere else.